<template>
  <div>
    <h4>父组件</h4>
    {{ num }}
    <son
      :aa="num"
      :bb="num2"
    />
  </div>
</template>
<script>
import Son from './Son.vue'
export default {
  components: {
    Son
  },
  data() {
    return { num: 100, num2: 200 }
  }
}
</script>

